Dendrophyllia arbuscula, van der Horst, 1922

Lam, Katherine, Morton, Brian & Hodgson, Paul, 2008, Ahermatypic corals (Scleractinia: Dendrophylliidae, Oculinidae and Rhizangiidae) recorded from submarine caves in Hong Kong, Journal of Natural History 42 (9 - 12), pp. 729-747 : 732-733

D. arbuscula van der Horst, 1922

( Figure 1E–I) Dendrophyllia arbuscula Van der Horst, 1922:105 , Plate 8, Fig. 6 Dendrophyllia arbuscula Eguchi, 1968 :C55, Plate 21, Figs 5 and 13; Yabe and Eguchi 1942:162, 166–167; Phillal and Scheer 1974:426, Fig. 7a; Song 1991:136, Plate 1, Fig. 4, Plate 3, Fig. 1; Ogawa and Takahashi 1995:17, Plate 1, Figs 1 –7

Description

Dendroid colonies which bud near the calicular margin. The oldest and main branch is prominent, with side branches developed by budding. The budding branch is at, right angles to the original branch. A corallite sometimes bears two to four buds at the same time. Corallite thinner near base than calice margin. Calice circular to slightly oval,, 7.9–11.6 mm in longer diameter. Finely granulated, rectilinear ribs extend to the base of the colony. Rows of perforations present in intercostal furrows. Septa in four cycles. Ventral septa in five cycles. S 1 is entire, granulated, slightly exsert and larger than the others. S 2 slightly shorter and thinner than S 1. S 3 septa are very small and unite with those of S 4 to create a dentate edge. Columella well developed and trabecular.

Type locality

2.3 miles N. 63 W. from the north-point of Nuhu Jaan, Kei-Islands, depth 90 m and Kulewatti-(sollot-)bay, Dammer Island , depth 45 m.

Distribution

Korea ( Song 1991), Japan (30 m) ( Ogawa and Takahashi 1995), Conic Island and Steep Island Caves, Hong Kong (this study).